Allows you to define a maximum file size, and will split zip file output based on that size. Each zip file produced is a completely functional archive, i.e. it doesn't generate a single huge zip file then split that into pieces.
Given a folder with a set of files of various sizes
sources/10mb-32.txt 10000000
sources/11mb-32.txt 11000000
sources/1mb-32.txt 1000000
sources/2mb-32.txt 2000000
sources/3mb-32.txt 3000000
sources/4mb-32.txt 4000000
sources/5mb-32.txt 5000000
sources/6mb-32.txt 6000000
sources/7mb-32.txt 7000000
sources/8mb-32.txt 8000000
sources/9mb-32.txt 9000000
the following program will archive all the text files above
package main
import (
"fmt"
"github.com/jar-o/splitzip"
)
func main() {
fmt.Printf("Zip(), any error? %+v\n", splitzip.Zip("sources", "sources/zip", "test", 10000000, .4))
}
and will produce a numbered sequence of zip files smaller than the defined
"max size" of 10MB
:
sources/zip/test0.zip 9444579
sources/zip/test1.zip 9444588
sources/zip/test2.zip 9444622
sources/zip/test3.zip 9444513
sources/zip/test4.zip 3778674
The final parameter .4
in the call to splitzip.Zip()
above is the expected
average space savings for this set of files. Because the density of files will
vary, and hence their compressibility, you can use this number to optimize for
your set of file types. If you're not certain, just leave it as 0
.